java如何从抽象表中删除一行？

Question

我正在一个按钮中尝试这段代码，当按下它时，它将删除一行，但当它试图删除该行时，我得到一个错误。有什么想法吗

public void actionPerformed(ActionEvent e)
        {
            int searchedId = 1001;//ID of the product to remove from the table
            int row = -1;//index of row or -1 if not found

            //search for the row based on the ID in the first column
            for(int i=0;i<HireTable.getRowCount();++i)
                if(HireTable.getValueAt(i, 0).equals(searchedId)){
                    row = i;
                    break;
                }

            if(row != -1){
                HireTable.remove(row);//remove row
                System.out.println("yes");
            }else{
                //not found
                System.out.println("no");

             hireStats.fireTableDataChanged();
            }
        }
    });

堆栈跟踪

Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0
    at java.awt.Container.remove(Container.java:1195)
    at DataManager$2.actionPerformed(DataManager.java:155)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:308)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.Component.processMouseEvent(Component.java:6505)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
    at java.awt.Component.processEvent(Component.java:6270)
    at java.awt.Container.processEvent(Container.java:2229)
    at java.awt.Component.dispatchEventImpl(Component.java:4861)
    at java.awt.Container.dispatchEventImpl(Container.java:2287)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    at java.awt.Container.dispatchEventImpl(Container.java:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719)
    at java.awt.Component.dispatchEvent(Component.java:4687)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:694)
    at java.awt.EventQueue$3.run(EventQueue.java:692)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    at java.awt.EventQueue$4.run(EventQueue.java:708)
    at java.awt.EventQueue$4.run(EventQueue.java:706)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Answer 1

这个答案更多的是关于如何阅读异常消息，但我认为你们和其他人会发现它很有用

ArrarIndexOutOfBound异常非常有用，因为异常消息会告诉我们使用的索引以及导致错误的确切代码行。在发布的例外情况中，我们看到：

 java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 0
 at java.awt.Container.remove(Container.java:1195)

这告诉我们两件重要的事情：

1. 尝试删除空数组的第一个索引时出错。这应该是一个惊喜，因为您的表可能不是空的，如果是空的，那么搜索要删除的元素的循环应该被跳过，不会出现错误
2. 该错误是由容器remove方法引发的。没有SSCCE，我只能推测HireTable是一个JTable（扩展容器）。在JTable上调用继承的remove方法没有任何意义，因为表不“包含”行，例如，JPanel可以包含许多按钮

要删除一行，我们需要使用TableModel。DefaultTableMode包含一个removeRow方法。像这样的方法可以奏效：

  ((DefaultTableModel)hireTable.getModel()).removeRow(row);